Power loops apparently aren't boring yet and I need to remember to go into air mode right from the start. I do like non-air for landing though, even if my landings are still crappy (as are my turns). Overall I'm happy with the progress and feeling much more comfortable than during pack #1.

The XB-38 was an experimental B-17 fitted with Allison liquid cooled engines. There was some concern that production of the radial engines might not meet the production demand of the War Department. There was only one XB-38 built. It did not have a long life - during flight #9, engine #3 caught fire forcing the test crew to bail out. The prototype was, of course, destroyed. The program was ended.

One of our members on RCG, Travis, 3D printed the parts necessary to convert the B-17 into the XB-38. I was lucky in that Travis - also known as - Redhood - agreed to provide me with the necessary parts. He sent me the motor mounts, back plates, hubs and spinners, as well as the remote controlled ball turret. The custom nose glass was also provided. He also modified the spinners to accept the FMS B-25 props, which I prefer to use on all of my 1875mm B-17s. Thank you, Travis for all your hard work!

So yesterday I took the B-Wing mk.2 out for her maiden voyage, and the initial flights went well. Fairly well balanced, and CG seemed to be close. However, the 'hyperstalling' issues seen on the mk.1 continued to plague the mk.2

If you haven't ready the mk.1 blog posts, here is a summary: under high-loading maneuvers, the aircraft will bob its nose in a 'hyperstall' like attitude in which the plane stalls and recovers quickly in somewhat rapid succession. This makes the plane difficult to fly and, ultimately, a very poor low and tight FPV platform like it is supposed to be

The mk.2 doesn't exhibit hyperstall to the extent the mk.1 did (where it was basically unflyable) although it is still present and annoying. Overall however, the mk.2 with the KFm-4 wing flies much better than the KFm-2 on the mk.1. As usual, for more build details check out my 'Stories Collections' on Instagram where I log the builds and such: https://www.instagram.com/highlydistracted/

After some quick research, it seems that hyperstalling is largely caused by a nose-heavy plane, especially on low sweep angle wings (http://www.slopesoarer.com/Plank_Set-Up.html). Before I hack up the leading edge on the B-Wing mk.2, I will do some more flight testing with the battery moved further aft and see how that effects the flight performance. According to the standard wing CG calculator (see attached image)...Continue Reading

it's been a while sinds I featured a fixed wing RC on my channel.. NOT because I'm not interested but simply because I didn't run into a new plane I was excited to try
BUT.. here it is then.. actually a plane that comes in my YT channel's colors :P

I think the cold effected the models a little harsh .
Flight times were down , power was down . Brrrrr !

F959 .. Flies reasonably well . Not sure how effective the cam is , but a cheap cam on a cheap plane ( see video )
Ezio .. Wow the new battery was good ( 79% left when I got home and checked )
450x Looks like the 450x has become a Nonotech killer , my battery of choice Nano 260mAh 1s puffed up about 100%
Firstar 200 , flies really well . I was actually doing rolls
FMS Vtail - Down on power , that prop bites . ( Same as original Ezio ) I will have to look at a new prop for the FMS .. Might also need a new ESC if the new prop loads the motor too much . I like the way it flies , but I hate the prop . In the cold this morning , even 100% throttle felt weak . On the other hand the Ezio was flying with very little throttle .

Oh well ! Was a day out ( little wind ) . These days be few and far between .
Oh and ...... The grumpy old man was there of course ! And he walked out into the field when I was flying without warning .
And yelling something about ( dont you know the rules ? )

Very good and fast 3S 3 inch drone which is very light with the Runcam Nano 2 camera and TBS Pro32 Nano VTX

or the Diatone GTB229 Cube 8500KV 2S Version 2.5inch drone
from Banggood with Coupon: BGGTB http://bit.ly/GtB229Cube
Very good and fast 2S 2.5 inch drone which weighs only 43 grams with a Runcam Nano 2 camera and TBS Pro32 Nano VTX

This link is actually for me to get back to this awesome post but feel free to check if you want to go deeper into power system calculations.
Warning: numbers and formulas involved, not for the faint hearted
Ronaldohttps://www.rcgroups.com/forums/show...ostcount=26895